3 Dec '07 Tracking News

Contents on 3 December '07

IAU Minor Planet Center
- NEOCP Activity -- two listings: 2 updated
- New MPECs -- seven MPECs
- Observers -- 61 observing facilities
Impact Risk Monitoring -- two objects
Chronology

Resources:

Consolidated Risk Tables - the CRT page
Earth's Busy Neighborhood Traffic Report
Ephemerides for risk-rated and nearby objects
Old & new CRT Archive
Old News Archive & Small Objects Archive

The latest news: framed access (best), RSS news feed (flags updates), or redirection - Note: A/CC has a main Web site and a backup site, which now has its own backup RSS news feed.

Navigation tips: Use the << and >> arrows on the menus for each regular section (Observers, Risks, etc.) to move to the previous and next day's news for that section. Use the Index menu item to access specific days this year through a calendar interface. And use the all-up news archive to access news from any time since A/CC began in early 2002. To keep track of what's new each day, watch the Chronology section.

NEOCP Activity on 3 December '07

The MPC's NEO Confirmation Page has 2 listings: 2 updated

When last checked at 2354 UTC today, the Minor Planet Center's NEO discovery Confirmation Page (NEOCP) had two updated listings. Both of these were "one nighters." So far The Tracking News has counted a total of three objects listed on the NEOCP at some point today.

To learn how observers use the NEOCP, see the Practical guide on how to observe NEOCP object by Birtwhistle et al. at Suno Observatory.

New MPECs on 3 December '07

Minor Planet Electronic Circulars

As of last check at 2354 UTC, there have been seven MPECs issued today from the International Astronomical Union's Minor Planet Center in Cambridge, Massachusetts.

MPEC 2007-X08 time-stamped "07:10 UT" - Daily Orbit Update - see below
MPEC 2007-X09 time-stamped "15:03 UT" - Comet P/2007 T2 (Kowalski) - see below
MPEC 2007-X10 time-stamped "15:06 UT" - Comet P/2007 T6 (Catalina) - see below
MPEC 2007-X11 time-stamped "15:09 UT" - Comet C/2007 U1 (LINEAR) - see below
MPEC 2007-X12 time-stamped "15:17 UT" - Observations of Comets - see below
MPEC 2007-X13 time-stamped "16:12 UT" - Comet C/2007 W3 (LINEAR) - see below
MPEC 2007-X14 time-stamped "21:33 UT" - Comet P/2006 W4 (Hill)

MPEC 2007-X14 - "21:33 UT" - Comet P/2006 W4 (Hill)

PK06W040 P/2006 W4 (Hill) (i=36.4°, q=4.439 AU, Q=8.519 AU, TP=2009 Jan. 21.01289 TT) from LINEAR (Sept. 15.44-46p3) and Ageo Obs. (Dec. 1.75-76p2 & 3.66-67p2)

MPEC 2007-X13 - "16:12 UT" - Comet C/2007 W3 (LINEAR)

CK07W030 C/2007 W3 (i=78.7°, q=1.778 AU, TP=2008 June 2.793 TT) from LINEAR (Nov. 29.32-37p5 & Dec. 2.27-31p4), Lumezzane Obs. (Nov. 30.90-91p3), Farra d'Isonzo Obs. (Dec. 1.04p2), Astronomical Research Obs. (ARO) (Dec. 1.31p3), Great Shefford Obs. (Dec. 1.78-79p3), Lulin Minor Bodies Tracking (LIMIT) (Dec. 2.64-65p4), Kanab Obs. (Dec. 3.28-31p2), Table Mtn. Obs. (Dec. 3.30-32p4), Farpoint Obs. (Dec. 3.41-42p5), and RAS Obs. Mayhill (Dec. 3.47-49p2)

MPEC 2007-X12 - "15:17 UT" - Observations of Comets

PK07W020 P/2007 W2 from Cordell-Lorenz Obs. (Nov. 28.32p1, 28.36p1 & 30.38-42p3), Buchloe Obs. (Nov. 28.81p1), Nazaret Obs. (Nov. 28.96p3 & Dec. 1.03-05p3), Ageo Obs. (Nov. 30.75-76p2), Montcabre Obs. (Nov. 30.89-90p3), and Teide Obs. (Dec. 1.92-94p3)
PK07V010 P/2007 V1 from Lumezzane Obs. (Nov. 18.96p3), Nazaret Obs. (Nov. 27.92-95p3), Buchloe Obs. (Nov. 28.78p3), San Marcello Pistoiese Obs. (Nov. 29.87-89p3), Montcabre Obs. (Nov. 30.94-95p3), LINEAR (Dec. 2.27-32p5), and Vega del Thader Obs. (Dec. 2.95-96p4)
PK07R020 P/2007 R2 (Gibbs) from Schiaparelli Obs. (Oct. 22.95p1), Kiev Comet Station (Nov. 19.95-96p3), and Chante-Perdrix Obs. (Nov. 28.78-80p3)
PK07H010 P/2007 H1 (McNaught) from Remanzacco Obs. (Nov. 16.86p1), El Leoncito Obs. (Nov. 23.04-05p3), Hiratsuka Obs. (Nov. 25.51p3 & Dec. 2.47p3), Sabadell Obs. (Nov. 27.74-75p5), Monte Deva Obs. (Nov. 28.83-84p5 & Dec. 1.89-90p5), Rodeno Obs. (Nov. 30.81-83p3), Vicksburg Obs. (Dec. 1.11-12p2), Tosa Obs. (Dec. 1.57p3), Masquefa Obs. (Dec. 1.81-82p3), and Nazaret Obs. (Dec. 2.84-85p3)
CK07G010 C/2007 G1 (LINEAR) from Ageo Obs. (Nov. 24.36p2 & 25.37p2)
CK07E010 C/2007 E1 (Garradd) from San Marcello Pistoiese Obs. (Nov. 28.82-84p3) and LINEAR (Dec. 2.27-30p3)
CK06W030 C/2006 W3 (Christensen) from Masquefa Obs. (Dec. 1.03-04p3) and Montana Blanca Obs. (Dec. 2.97p3)
CK06U060 C/2006 U6 (Spacewatch) from El Leoncito Obs. (Nov. 23.06-07p3) and North Ryde Obs. (Dec. 2.46-49p2)
CK06O02F C/2006 OF2 (Broughton) from Ageo Obs. (Nov. 24.42-43p3), Hiratsuka Obs. (Nov. 25.45p2 & Dec. 2.38-39p3), Sabadell Obs. (Nov. 27.73-74p3), Monte Deva Obs. (Nov. 28.77-79p5), Rodeno Obs. (Nov. 30.80-81p3), Vicksburg Obs. (Dec. 1.02-03p2), Hamamatsu-Yuto Obs. (Dec. 1.40p3), Masquefa Obs. (Dec. 1.76-77p3), and LINEAR (Dec. 2.07-11p3)
CK06M010 C/2006 M1 (LINEAR) from Schiaparelli Obs. (Oct. 22.94p1) and San Marcello Pistoiese Obs. (Nov. 28.82-84p3)
CK05EH3L C/2005 EL173 (LONEOS) from Hiratsuka Obs. (Nov. 17.56p3) and North Ryde Obs. (Dec. 2.51-53p2)
0191P 191P/McNaught from Montana Blanca Obs. (Nov. 26.98p3), Monte Deva Obs. (Nov. 29.01-02p3), Rodeno Obs. (Nov. 30.91-93p3), Vicksburg Obs. (Dec. 1.19-21p2), and Masquefa Obs. (Dec. 1.87-88p2)
0188P 188P/LINEAR-Mueller from Pinsoro Obs. (Nov. 10.86-87p3), Ageo Obs. (Nov. 23.55-56p2), Hiratsuka Obs. (Nov. 25.48p3 & Dec. 2.44-45p2), Monte Deva Obs. (Nov. 28.84-86p5), Rodeno Obs. (Nov. 30.83-85p3), Tosa Obs. (Dec. 1.57p2), Masquefa Obs. (Dec. 1.79-80p3), and Nazaret Obs. (Dec. 1.84-86p3)
0117P 117P/Helin-Roman-Alu 1 from El Olivo Obs. (Nov. 30.87-89p3), La Murta Obs. (Nov. 30.95p3), and Masquefa Obs. (Dec. 1.85-86p3)
0116P 116P/Wild 4 from LINEAR (Nov. 20.14-19p5), Nazaret Obs. (Nov. 30.97-99p3), and Montcabre Obs. (Nov. 30.98p3)
0110P 110P/Hartley 3 from Ageo Obs. (Nov. 23.68-69p3), Monte Deva Obs. (Nov. 29.07p3), Purple Mtn. Obs. XuYi Station (Nov. 29.55-60p4), La Murta Obs. (Dec. 1.00p3), Masquefa Obs. (Dec. 1.01p3), El Olivo Obs. (Dec. 1.07-09p3), and LINEAR (Dec. 2.39-44p5)
0093P 93P/Lovas 1 from Schiaparelli Obs. (Oct. 22.92p1, Nov. 27.01p1 & 27.06p1), Alginet Obs. (Oct. 29.85-86p3), Ageo Obs. (Nov. 24.46-47p3), Hiratsuka Obs. (Nov. 25.52-53p3 & Dec. 2.49-50p3), Cesson Obs. (Nov. 26.74p1, 26.79-83p2 & 27.90p2), Guadarrama Obs. (Nov. 26.87-88p3), Sabadell Obs. (Nov. 27.73p3), Carmelita Obs. (Nov. 28.81p3), Monte Deva Obs. (Nov. 28.97-98p5 & Dec. 1.91-92p5), Hamamatsu-Yuto Obs. (Nov. 30.56-57p4), Mataro Obs. (Nov. 30.83p1, 30.89p1 & 30.96p1), Rodeno Obs. (Nov. 30.86-87p3), El Olivo Obs. (Nov. 30.91p3), La Murta Obs. (Nov. 30.94-95p3), Vicksburg Obs. (Dec. 1.08-09p2), and Masquefa Obs. (Dec. 1.84p3)
0074P 74P/Smirnova-Chernykh from Kiev Comet Station (Nov. 19.97-98p2), Purple Mtn. Obs. XuYi Station (Nov. 28.72-77p4), and Vega del Thader Obs. (Dec. 2.97p6)
0050P 50P/Arend from Alginet Obs. (Nov. 2.80p3), Ageo Obs. (Nov. 24.49-50p2), Hiratsuka Obs. (Nov. 25.55-56p2), Chante-Perdrix Obs. (Nov. 25.77-78p2), Gualba Obs. (Nov. 25.78p1), Malaga Obs. (Nov. 26.00-01p3), Schiaparelli Obs. (Nov. 27.01p1 & 27.06p1), Cesson Obs. (Nov. 27.91-92p2), Nazaret Obs. (Nov. 28.84p1, 28.89-92p2 & 29.97-98p3), Carmelita Obs. (Nov. 28.85-86p3), Monte Deva Obs. (Nov. 28.99-00p4), Hamamatsu-Yuto Obs. (Nov. 30.60p2 & Dec. 1.54-56p4), Mataro Obs. (Nov. 30.85-88p3), Rodeno Obs. (Nov. 30.88-90p3), La Murta Obs. (Nov. 30.99-00p3), Montcabre Obs. (Dec. 1.87p3), and Vega del Thader Obs. (Dec. 2.89-92p7)
0046P 46P/Wirtanen from Lumezzane Obs. (Nov. 18.75p3), Kiev Comet Station (Nov. 19.74-77p2), Hiratsuka Obs. (Nov. 25.46p3 & Dec. 2.40p3), Buchloe Obs. (Nov. 28.73p3), Linceo Obs. (Nov. 28.75-78p3 & 29.75-78p3), Monte Deva Obs. (Nov. 28.80-82p5), and Vicksburg Obs. (Dec. 1.05-06p2)
0029P 29P/Schwassmann-Wachmann 1 from Malaga Obs. (Nov. 27.04-06p3), Naef Obs. (Nov. 27.89-93p3), Buchloe Obs. (Nov. 28.82p3), Nazaret Obs. (Nov. 29.00-01p3 & Dec. 1.06p3), Gualba Obs. (Nov. 29.19p2 & 30.98-99p3), El Olivo Obs. (Nov. 30.84-85p3), Montcabre Obs. (Nov. 30.91-92p3), Rodeno Obs. (Nov. 30.96-97p3 & Dec. 1.88-89p3), La Murta Obs. (Nov. 30.96-97p3), Masquefa Obs. (Dec. 1.04-05p3), Nagano Obs. (Dec. 1.67-68p4), Monte Deva Obs. (Dec. 2.06-07p5), and Vega del Thader Obs. (Dec. 2.98-99p9)
0017P 17P/Holmes from Great Shefford Obs. (Oct. 31.07p1, Nov. 1.96p1, 4.05p1, 5.93p1, 9.08p1, 11.06p1, 12.04p1, 12.83p1, 14.08p1, 14.89p1, 16.08p1, 23.89p1, 28.86p1, 28.91p1 & Dec. 1.85p1), Ondrejov Obs. (Nov. 1.72p3, 1.97p7 & 19.69-70p5), Moletai Obs. (Nov. 5.68-74p10 & 5.84-89p9), Ageo Obs. (Nov. 17.66p3), Kielce Obs. (Nov. 21.75-78p4), Nagano Obs. (Nov. 23.50p4 & 25.53p4), Hamamatsu-Yuto Obs. (Nov. 25.54-55p4, 30.53-55p8 & Dec. 1.58p3), Chante-Perdrix Obs. (Nov. 25.74-76p6, 26.73p3, 27.74-75p3, 27.90-91p3, 28.77-78p3, 29.75-76p3, 29.94p3 & Dec. 1.75-78p3), Gualba Obs. (Nov. 25.78p4, 30.78p2 & 30.97p1), Corbera Obs. (Nov. 25.78-80p6), Cesson Obs. (Nov. 26.75-78p2), Nazaret Obs. (Nov. 26.84p2, 26.93-97p6, 27.88p3, 28.81-83p3, 29.94-95p3, 30.86p3, Dec. 1.87-90p3 & 2.91-94p2), Malaga Obs. (Nov. 26.84-86p3 & 30.96-97p3), Guadarrama Obs. (Nov. 26.90-91p3), Atlante Obs. (Nov. 26.94-96p3 & 28.88-89p3), Remanzacco Obs. (Nov. 26.95-96p2), Schiaparelli Obs. (Nov. 27.02-06p2), Sabadell Obs. (Nov. 27.75p3), Petit Jean Mtn. South Obs. (PJMSO) (Nov. 28.18-23p10, 29.33-35p8, 30.15-17p9 & Dec. 3.11-12p7), Stammersdorf Obs. (Nov. 28.71-75p6 & 28.82p1), Buchloe Obs. (Nov. 28.80p5), Carmelita Obs. (Nov. 28.88p3), Monte Deva Obs. (Nov. 28.92-93p5, 30.00-01p5, Dec. 1.87-88p5 & 3.02p5), Montcabre Obs. (Nov. 30.73-75p3 & Dec. 1.83-85p3), El Olivo Obs. (Nov. 30.81-82p3), Rodeno Obs. (Nov. 30.93-94p3 & Dec. 1.85-86p3), Masquefa Obs. (Nov. 30.99p3), La Murta Obs. (Nov. 30.99p3), Mataro Obs. (Dec. 1.04-05p3), Red Barn Obs. (Dec. 1.11-12p5), and Tosa Obs. (Dec. 1.60-64p3)
0008P 8P/Tuttle from Ondrejov Obs. (Nov. 19.70-71p5), Ageo Obs. (Nov. 23.43-44p2 & Dec. 2.44p3), Malaga Obs. (Nov. 26.89-91p3), Montana Blanca Obs. (Nov. 27.00-01p3 & Dec. 2.98-99p3), Sabadell Obs. (Nov. 27.72p3), Buchloe Obs. (Nov. 28.73p3), Monte Deva Obs. (Nov. 28.90-91p5 & Dec. 2.07-08p5), Sumoto Obs. (Nov. 30.63-65p4), and La Murta Obs. (Nov. 30.96p3)

MPEC 2007-X11 - "15:09 UT" - Comet C/2007 U1 (LINEAR)

CK07U010 C/2007 U1 (LINEAR) (i=157.8°, q=3.329 AU, TP=2008 Aug. 7.2232 TT) from Ageo Obs. (Nov. 25.66-67p3), Nazaret Obs. (Dec. 1.01-02p3), Montcabre Obs. (Dec. 1.01-02p3), and Table Mtn. Obs. (Dec. 3.44-45p4)

MPEC 2007-X10 - "15:06 UT" - Comet P/2007 T6 (Catalina)

PK07T060 P/2007 T6 (Catalina) (q=2.232 AU, Q=6.753 AU, TP=2007 Aug. 19.6870 TT) from Ageo Obs. (Nov. 24.71-72p3) and Schiaparelli Obs. (Nov. 27.09p1)

MPEC 2007-X09 - "15:03 UT" - Comet P/2007 T2 (Kowalski)

PK07T020 P/2007 T2 (Kowalski) (q=0.696 AU, Q=5.485 AU, TP=2007 Sept. 19.0214 TT) from Great Shefford Obs. (Nov. 15.21-22p3) and Montcabre Obs. (Nov. 27.09p1, 27.14-18p2 & Dec. 1.09-15p3)

<< DOU on 3 Dec. '07 >> MPEC 2007-X08 - "07:10 UT" - Daily Orbit Update

Observations of risk-listed objects
K07W03P 2007 WP3 (small asteroid, arc=15 days, H=23.5 ~68m) from Farpoint Obs. (Dec. 3.20-22p4)
K07VI4K 2007 VK184 (almost small, arc=21 days, H=22.0 ~135m) from Farpoint Obs. (Dec. 3.18-19p3)
Observations of recently (no longer) risk-listed objects
K07W55E 2007 WE55 (arc=4 days, H=20.0 ~339m) from LINEAR (Dec. 2.28-31p3) and PJMSO (Dec. 3.22-23p8)
K07VD7W 2007 VW137 (arc=24 days, H=18.1 ~812m) from LINEAR (Dec. 2.28-30p3)
Observations of small asteroids (H>22.0)
K07W04Z 2007 WZ4 (arc=13 days, H=24.4 ~45m) from Begues Obs. (Nov. 30.85-86p5) and PJMSO (Dec. 3.18-19p7)
Observations of other objects
K07W55F 2007 WF55 (arc=3 days, H=18.9 ~562m) from LINEAR (Dec. 2.27-31p4)
K07VI8A 2007 VA188 (Q=4.926 AU, arc=21 days, H=19.5 ~426m) from Jim Young via Table Mtn. Obs. (Dec. 3.09-11p4)
K07VI3R 2007 VR183 (Q=4.353 AU, arc=80 days, H=17.3 ~1.17 km) from PJMSO (Dec. 3.20-21p7)
K07U06S 2007 US6 (arc=3 opp, H=18.3 ~741m) from New Millennium Obs. (Nov. 18.90p2)
K07U01X 2007 UX1 (arc=47 days, H=20.5 ~269m) from PJMSO (Dec. 3.17-18p6)
K07T23B 2007 TB23 (i=38.3°, arc=51 days, H=18.7 ~616m) from New Millennium Obs. (Nov. 18.88p1)
K07T15G 2007 TG15 (arc=53 days, H=19.6 ~407m) from New Millennium Obs. (Nov. 18.83-87p6) and Begues Obs. (Nov. 30.74-75p3)
K07S11E 2007 SE11 (i=48.3°, arc=71 days, H=17.8 ~933m) from Begues Obs. (Nov. 30.75-76p3) and Balzaretto Obs. (Nov. 30.76-79p4)
K07S06P 2007 SP6 (arc=72 days, H=18.2 ~776m) from LINEAR (Dec. 2.47-51p4)
K07R12U 2007 RU12 (arc=82 days, H=20.0 ~339m) from PJMSO (Dec. 3.14-15p3)
K07P11U 2007 PU11 (Q=4.384 AU, arc=3 opp, H=16.3 ~1.86 km) from Hamamatsu-Yuto Obs. (Dec. 2.58-59p3)
K07L32R 2007 LR32 (arc=177 days, H=17.2 ~1.23 km) from New Millennium Obs. (Nov. 18.78-86p9)
K04RP2D 2004 RD252 (arc=2 opp, H=19.0 ~537m) from New Millennium Obs. (Nov. 18.77-81p3)
K03B84H 2003 BH84 (arc=2 opp, H=16.9 ~1.41 km) from LINEAR (Dec. 2.06-11p4) and Hamamatsu-Yuto Obs. (Dec. 2.48-54p5)
G8044 168044 2005 SG from New Millennium Obs. (Nov. 18.81-85p6)
F3591 153591 2001 SN263 from Saint-Barthelemy Obs. (Nov. 30.92-94p4) and LINEAR (Dec. 2.27-31p4)
D8971 138971 2001 CB21 from LINEAR (Dec. 2.14-18p4)
D8893 138893 2000 YH66 from New Millennium Obs. (Nov. 18.78-85p7)
D8852 138852 2000 WN10 from Begues Obs. (Nov. 30.79p4)
D7084 137084 1998 XS16 from New Millennium Obs. (Nov. 18.77-85p9)
D6617 136617 1994 CC from Begues Obs. (Nov. 30.82-83p3)
99907 99907 1989 VA from New Millennium Obs. (Nov. 18.78-86p8) and LINEAR (Dec. 2.06-10p3)
86324 86324 1999 WA2 from New Millennium Obs. (Nov. 18.74-83p10)
85804 85804 1998 WQ5 from Malaga Obs. (Nov. 30.93-95p3)
20826 20826 2000 UV13 from New Millennium Obs. (Nov. 18.87-91p5)
18736 18736 1998 NU from Begues Obs. (Nov. 30.80-81p3)
03200 3200 Phaethon (1983 TB) from Urseanu Obs. (Nov. 28.01-02p3)
02212 2212 Hephaistos (1978 SB) from New Millennium Obs. (Nov. 18.87p1)
01036 1036 Ganymed (1924 TD) from Urseanu Obs. (Nov. 29.01-04p3)

Observers on 3 December '07

A total of 61 observing facilities appear in today's MPECs.

Code	Observer / observatory
`349`	Ageo Obs. in Japan, 12 in MPECs 2007-X10, 2007-X11, 2007-X12 & 2007-X14 -- P/2007 W2, C/2007 U1, P/2007 T6, C/2007 G1, P/2006 W4, C/2006 OF2, 188P, 110P, 93P, 50P, 17P, 8P
`J97`	Alginet Obs. in Spain, 2 in MPEC 2007-X12 -- 93P, 50P
`H55`	Astronomical Research Obs. in Illinois, 1 in MPEC 2007-X13 -- C/2007 W3
`J51`	Atlante Obs. in the Canary Islands, 1 in MPEC 2007-X12 -- 17P
`A81`	Balzaretto Obs. in Italy, 1 in MPEC 2007-X08 -- 2007 SE11
`170`	Begues Obs. in Spain, 6 in MPEC 2007-X08 -- 2007 WZ4, 2007 TG15, 2007 SE11, 18736, 138852, 136617
`215`	Buchloe Obs. in Germany, 6 in MPEC 2007-X12 -- P/2007 W2, P/2007 V1, 46P, 29P, 17P, 8P
`B20`	Carmelita Obs. in Spain, 3 in MPEC 2007-X12 -- 93P, 50P, 17P
`B24`	Cesson Obs. in France, 3 in MPEC 2007-X12 -- 93P, 50P, 17P
`A77`	Chante-Perdrix Obs. in France, 3 in MPEC 2007-X12 -- P/2007 R2, 50P, 17P
`A10`	Corbera Obs. in Spain, 1 in MPEC 2007-X12 -- 17P
`850`	Cordell-Lorenz Obs. in Tennessee, 1 in MPEC 2007-X12 -- P/2007 W2
`808`	El Leoncito Obs. in Argentina, 2 in MPEC 2007-X12 -- P/2007 H1, C/2006 U6
`J36`	El Olivo Obs., 5 in MPEC 2007-X12 -- 117P, 110P, 93P, 29P, 17P
`734`	Farpoint Obs. in Kansas, 3 in MPECs 2007-X08 & 2007-X13 -- 2007 WP3, C/2007 W3, 2007 VK184
`595`	Farra d'Isonzo Obs. in Italy, 1 in MPEC 2007-X13 -- C/2007 W3
`J95`	Great Shefford Obs. in England, 3 in MPECs 2007-X09, 2007-X12 & 2007-X13 -- C/2007 W3, P/2007 T2, 17P
`458`	Guadarrama Obs. in Spain, 2 in MPEC 2007-X12 -- 93P, 17P
`442`	Gualba Obs. in Spain, 3 in MPEC 2007-X12 -- 50P, 29P, 17P
`379`	Hamamatsu-Yuto Obs. in Japan, 6 in MPECs 2007-X08 & 2007-X12 -- 2007 PU11, C/2006 OF2, 2003 BH84, 93P, 50P, 17P
`D88`	Hiratsuka Obs., 7 in MPEC 2007-X12 -- P/2007 H1, C/2006 OF2, C/2005 EL173, 188P, 93P, 50P, 46P
`682`	Kanab Obs. in Utah, 1 in MPEC 2007-X13 -- C/2007 W3
`B02`	Kielce Obs. in Poland, 1 in MPEC 2007-X12 -- 17P
`585`	Kiev Comet Station in the Ukraine, 3 in MPEC 2007-X12 -- P/2007 R2, 74P, 46P
`704`	LINEAR in New Mexico, 15 in MPECs 2007-X08, 2007-X12, 2007-X13 & 2007-X14 -- 2007 WF55, 2007 WE55, C/2007 W3, 2007 VW137, P/2007 V1, 2007 SP6, C/2007 E1, P/2006 W4, C/2006 OF2, 2003 BH84, 99907, 153591, 138971, 116P, 110P
`J76`	La Murta Obs. in Spain, 7 in MPEC 2007-X12 -- 117P, 110P, 93P, 50P, 29P, 17P, 8P
`J59`	Linceo Obs. in Spain, 1 in MPEC 2007-X12 -- 46P
`D35`	Lulin Minor Bodies Tracking in Taiwan, 1 in MPEC 2007-X13 -- C/2007 W3
`130`	Lumezzane Obs. in Italy, 3 in MPECs 2007-X12 & 2007-X13 -- C/2007 W3, P/2007 V1, 46P
`J40`	Malaga Obs. in Spain, 5 in MPECs 2007-X08 & 2007-X12 -- 85804, 50P, 29P, 17P, 8P
`232`	Masquefa Obs. in Spain, 10 in MPEC 2007-X12 -- P/2007 H1, C/2006 W3, C/2006 OF2, 191P, 188P, 117P, 110P, 93P, 29P, 17P
`A06`	Mataro Obs. in Spain, 3 in MPEC 2007-X12 -- 93P, 50P, 17P
`152`	Moletai Obs. in Lithuania, 1 in MPEC 2007-X12 -- 17P
`J46`	Montana Blanca Obs. in the Canary Islands, 3 in MPEC 2007-X12 -- C/2006 W3, 191P, 8P
`213`	Montcabre Obs. in Spain, 8 in MPECs 2007-X09, 2007-X11 & 2007-X12 -- P/2007 W2, P/2007 V1, C/2007 U1, P/2007 T2, 116P, 50P, 29P, 17P
`945`	Monte Deva Obs. in Spain, 11 in MPEC 2007-X12 -- P/2007 H1, C/2006 OF2, 191P, 188P, 110P, 93P, 50P, 46P, 29P, 17P, 8P
`A13`	Naef Obs. in Switzerland, 1 in MPEC 2007-X12 -- 29P
`D81`	Nagano Obs., 2 in MPEC 2007-X12 -- 29P, 17P
`J47`	Nazaret Obs. in Spain, 9 in MPECs 2007-X11 & 2007-X12 -- P/2007 W2, P/2007 V1, C/2007 U1, P/2007 H1, 188P, 116P, 50P, 29P, 17P
`A24`	New Millennium Obs. in Italy, 12 in MPEC 2007-X08 -- 2007 US6, 2007 TG15, 2007 TB23, 2007 LR32, 2004 RD252, 99907, 86324, 20826, 168044, 138893, 137084, 2212
`423`	North Ryde Obs. in New South Wales, 2 in MPEC 2007-X12 -- C/2006 U6, C/2005 EL173
`557`	Ondrejov Obs. in the Czech Republic, 2 in MPEC 2007-X12 -- 17P, 8P
`H45`	Petit Jean Mtn. South Obs. (PJMSO) in Arkansas, 6 in MPECs 2007-X08 & 2007-X12 -- 2007 WZ4, 2007 WE55, 2007 VR183, 2007 UX1, 2007 RU12, 17P
`J52`	Pinsoro Obs. in Spain, 1 in MPEC 2007-X12 -- 188P
`D29`	Purple Mtn. Obs. XuYi Station in China, 2 in MPEC 2007-X12 -- 110P, 74P
`H06`	RAS Obs. Mayhill in New Mexico, 1 in MPEC 2007-X13 -- C/2007 W3
`H68`	Red Barn Obs. in Georgia, 1 in MPEC 2007-X12 -- 17P
`473`	Remanzacco Obs. in Italy, 2 in MPEC 2007-X12 -- P/2007 H1, 17P
`939`	Rodeno Obs. in Spain, 8 in MPEC 2007-X12 -- P/2007 H1, C/2006 OF2, 191P, 188P, 93P, 50P, 29P, 17P
`619`	Sabadell Obs. in Spain, 5 in MPEC 2007-X12 -- P/2007 H1, C/2006 OF2, 93P, 17P, 8P
`B04`	Saint-Barthelemy Obs. in Italy, 1 in MPEC 2007-X08 -- 153591
`104`	San Marcello Pistoiese Obs. in Italy, 3 in MPEC 2007-X12 -- P/2007 V1, C/2007 E1, C/2006 M1
`204`	Schiaparelli Obs. in Italy, 6 in MPECs 2007-X10 & 2007-X12 -- P/2007 T6, P/2007 R2, C/2006 M1, 93P, 50P, 17P
`A97`	Stammersdorf Obs. in Austria, 1 in MPEC 2007-X12 -- 17P
`361`	Sumoto Obs. in Japan, 1 in MPEC 2007-X12 -- 8P
`673`	Table Mtn. Obs. in southern California, 2 in MPECs 2007-X11 & 2007-X13 -- C/2007 W3, C/2007 U1
`6735`	Jim Young via Table Mtn. Obs. in southern California, 1 in MPEC 2007-X08 -- 2007 VA188
`954`	Teide Obs. in the Canary Islands, 1 in MPEC 2007-X12 -- P/2007 W2
`D70`	Tosa Obs., 3 in MPEC 2007-X12 -- P/2007 H1, 188P, 17P
`A92`	Urseanu Obs. in Romania, 2 in MPEC 2007-X08 -- 3200, 1036
`J70`	Vega del Thader Obs. in Spain, 4 in MPEC 2007-X12 -- P/2007 V1, 74P, 50P, 29P
`H47`	Vicksburg Obs. in Mississippi, 5 in MPEC 2007-X12 -- P/2007 H1, C/2006 OF2, 191P, 93P, 46P

Impact Risk Monitoring on 3 December '07

**Summary Risk Table for Risk Assessments Updated Today** (last checks: NEODyS and JPL at 2354 UTC)
See the CRT page for a list of all objects rated recently as risks.
Note that the time horizon for JPL is 100 years from today and for NEODyS is now usually the year 2090.
For the latest official risk assessments, and for explanations of the terminology, see the JPL NEO Program Sentry and NEODyS CLOMON (backup) risk pages.
0000NNN000 Object	Risk Monitor	When Noted UTC	0000T0000 Year Range	VI #	000NN00 Prob Cum	T0000 PS Cum	T0000 PS Max	T S	Notes for Today's Latest Risk Assessments

2007 WP3	JPL Sentry	1449	2098-2106	12	1.0e-05	-4.54	-4.99	0	JPL: "Analysis based on 51 observations spanning 14.960 days (2007-Nov-18.26457 to 2007-Dec-03.2245)." Diameter approximately 0.067 km. from mean, weighted H=23.5.

2007 VK184	JPL Sentry	1449	2048-2064	20	4.0e-05	-2.79	-2.88	0	JPL: "Analysis based on 74 observations spanning 21.055 days (2007-Nov-12.13904 to 2007-Dec-03.19373)." Diameter approximately 0.130 km. from mean, weighted H=22.0.
2007 VK184	NEODyS	1449	2033-2074	30	4.11e-05	-2.79	-2.89	0	NEODyS: "Based on 74 optical observations (of which 0 are rejected as outliers) from 2007/11/12.140 to 2007/12/03.194."

Legend: VI# = VI count, Prob Cum = cumulative probability, PS Cum/Max = cumulative/maximum Palermo Scale, TS = Torino Scale

An impact solution, also known as a "virtual impactor" (VI), is not a prediction but rather a possibility derived from a variant orbit calculation that cannot be eliminated yet based on the existing data. Elimination can come quickly with just a little further observation or may take weeks or months, sometimes years. Once superceded or eliminated, a former impact solution has zero relevance to an object's risk. See Jon Giorgini's "Understanding Risk Pages" to learn more.

Chronology on 3 December '07

Times are UTC for when the items were noted or added by The Tracking News.

2209	Grabbed MPEC 2007-X14 - Comet P/2006 W4 (Hill) - see above
1659	Grabbed MPEC 2007-X13 - Comet C/2007 W3 (LINEAR) - see above
1558	Grabbed MPEC 2007-X09 - Comet P/2007 T2 (Kowalski) - see above Grabbed MPEC 2007-X10 - Comet P/2007 T6 (Catalina) - see above Grabbed MPEC 2007-X11 - Comet C/2007 U1 (LINEAR) - see above Grabbed MPEC 2007-X12 - Observations of Comets - see above
1449	Noted that JPL Sentry has updated its 2007 VK184 risk assessment - see above Noted that NEODyS has updated its 2007 VK184 risk assessment - see above Noted that JPL Sentry has updated its 2007 WP3 risk assessment - see above Grabbed MPEC 2007-X08 - Daily Orbit Update - see above

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